ICD-10 Diagnosis Code Z23

Encounter for immunization

Diagnosis Code Z23

ICD-10: Z23
Short Description: Encounter for immunization
Long Description: Encounter for immunization
This is the 2019 version of the ICD-10-CM diagnosis code Z23

Valid for Submission
The code Z23 is valid for submission for HIPAA-covered transactions.

Deleted Code
This code was deleted in the 2019 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2018. This code was replaced for the FY 2019 (October 1, 2018 - September 30, 2019).
  • Z29.11 - Enctr for prphylc immther for resp syncytial virus (RSV)
  • Z29.12 - Encounter for prophylactic antivenin
  • Z29.13 - Encounter for prophylactic Rho(D) immune globulin
  • Z29.14 - Encounter for prophylactic rabies immune globin

Code Classification
  • Factors influencing health status and contact with health services (Z00–Z99)
    • Persons with potential health hazards related to communicable diseases (Z20-Z29)
      • Encounter for immunization (Z23)

Information for Medical Professionals


Code Edits
The following edits are applicable to this code:
Unacceptable principal diagnosis - There are selected codes that describe a circumstance which influences an individual’s health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Convert to ICD-9
  • V05.9 - Vaccin for singl dis NOS (Approximate Flag)

Present on Admission (POA)
The code Z23 is exempt from POA reporting.

Synonyms
  • 1st HiB and DTP vaccine given
  • 2nd HiB and DTP vaccine given
  • 3rd HiB and DTP vaccine given
  • Administration of human papilloma virus type 6, 11, 16, and 18 vaccine done
  • Bacillus Calmette-Guerin vaccination given
  • Has influenza vaccination at home
  • Has influenza vaccination at hospital
  • Has influenza vaccination at surgery
  • Has influenza vaccination at work
  • Herpes zoster vaccination given
  • Human papilloma virus type 16 and 18 vaccination given
  • Human papilloma virus vaccination given
  • Human papillomavirus type 9 vaccination given
  • Influenza vaccination given
  • Influenza vaccination status
  • Influenza vaccination status
  • Influenza vaccination status
  • Influenza vaccination status
  • Measles vaccination requested
  • Measles, mumps and rubella vaccination given
  • Medication requested
  • Meningococcus B vaccination given
  • Meningococcus vaccination given
  • Pneumococcal immunization status
  • Pneumococcal vaccination given
  • Procedure needed
  • Rubella vaccination given
  • Tetanus toxoid vaccination given
  • Travel vaccination given
  • Vaccination given
  • Vaccination needed
  • Viral hepatitis A and B vaccination given
  • Viral hepatitis A vaccination given
  • Viral hepatitis B vaccination given

Index of Diseases and Injuries
References found for the code Z23 in the Index of Diseases and Injuries:

  • Code First:
    • any routine childhood examination
  • Notes:
    • procedure codes are required to identify the types of immunizations given

Information for Patients


Immunization

Also called: Vaccination

Shots may hurt a little, but the diseases they can prevent are a lot worse. Some are even life-threatening. Immunization shots, or vaccinations, are essential. They protect against things like measles, mumps, rubella, hepatitis B, polio, tetanus, diphtheria, and pertussis (whooping cough). Immunizations are important for adults as well as children.

Your immune system helps your body fight germs by producing substances to combat them. Once it does, the immune system "remembers" the germ and can fight it again. Vaccines contain germs that have been killed or weakened. When given to a healthy person, the vaccine triggers the immune system to respond and thus build immunity.

Before vaccines, people became immune only by actually getting a disease and surviving it. Immunizations are an easier and less risky way to become immune.

NIH: National Institute of Allergy and Infectious Diseases

  • Immunizations - diabetes (Medical Encyclopedia)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • Type 1 Excludes Notes - A type 1 Excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.

Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

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